US1857628A - Box stamping and drawing tool - Google Patents

Box stamping and drawing tool Download PDF

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Publication number
US1857628A
US1857628A US429783A US42978330A US1857628A US 1857628 A US1857628 A US 1857628A US 429783 A US429783 A US 429783A US 42978330 A US42978330 A US 42978330A US 1857628 A US1857628 A US 1857628A
Authority
US
United States
Prior art keywords
box
drawing tool
tool
box stamping
stamping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US429783A
Inventor
Eisenlohr Friedrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BLECHDOSEN und PLAKATFABRIK K
Blechdosen- und Plakatfabrik K G
Original Assignee
BLECHDOSEN und PLAKATFABRIK K
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BLECHDOSEN und PLAKATFABRIK K filed Critical BLECHDOSEN und PLAKATFABRIK K
Application granted granted Critical
Publication of US1857628A publication Critical patent/US1857628A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/08—Dies with different parts for several steps in a process

Definitions

  • the progressive mechanizing of work requires to-day packing boxes, the closure of which is so shaped that a reliable and quick pasting over of the box edges is possible with the known bandarolling machines.
  • the upper part of the box, where the lid engages no matter whether the box be round or square, to be smaller in diameter by the thickness of the sheet metal, that is set off, an operation which cannot be carried out on existing machines. Consequently a device must be produced which enables the production of this absolutely cylindrical box, when the lid is in'position.
  • This invention goes still further in that it provides a tool, which cuts out, draws and expands in one operation.
  • Fig. 1 shows the tool in longitudinal section, the left side showing the tool in raised position and the right side in lowered position.
  • Fig. 2 shows a finished box drawn and set off in one operation. 7
  • Fig. 3 is a top plan view of the drawing die.
  • A. combined cutting and drawing tool known per se, is constructed so that a drawing ring 5 is built separately movable in a cutting die a.
  • This ring I) is fastened on two bolts 0 and pressed down bysprings (Z.
  • a drawing die 6 is composed of segments and made expandible. This is effected by a conical insert 7".
  • an ejector g presses in its lower position upon the conical insert 7', whereby the segment jaws of the drawing die 6 are pressed apart.
  • a device as specified in claim 1 further. characterized by having incombination cooperating cutting rings, a blank holder ring adapted to move into and out of an annular channel surrounding said plunger, and a spring actuated ejector means moving in a central cavity of said die for automatically ejecting the work.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

May 10,1932.
F. EISENLOHR 7,628
BOX STAMPING AND DRAWING TOOL Filed Feb. '19, 1930 Patented May 10, 1 932 UNITED STATES PATENT OFFICE,
FRIEDRICH EISENLOHR, OF CANNSTA'IT, GERMANY, ASSIGNOR TO BLECHDOSEN- UNI) PLAKATFABRIK K. G., OF CANNSTATT, GERMANY BOX STAMPING AND DRAWING TOOL Application filed February 19, 1930, Serial No 429,783, and in Germany February 25, 1929.
The progressive mechanizing of work requires to-day packing boxes, the closure of which is so shaped that a reliable and quick pasting over of the box edges is possible with the known bandarolling machines. For this purpose it is necessary for the upper part of the box, where the lid engages, no matter whether the box be round or square, to be smaller in diameter by the thickness of the sheet metal, that is set off, an operation which cannot be carried out on existing machines. Consequently a device must be produced which enables the production of this absolutely cylindrical box, when the lid is in'position.
This mannerof manufacturing the boxes 7 this tool, the construction of which forms,
the object of this invention.
This invention goes still further in that it provides a tool, which cuts out, draws and expands in one operation.
An embodiment of the invention is illustrated by way of examplein the accompanying drawings in which:
Fig. 1 shows the tool in longitudinal section, the left side showing the tool in raised position and the right side in lowered position.
Fig. 2 shows a finished box drawn and set off in one operation. 7
Fig. 3 is a top plan view of the drawing die.
A. combined cutting and drawing tool, known per se, is constructed so that a drawing ring 5 is built separately movable in a cutting die a. This ring I) is fastened on two bolts 0 and pressed down bysprings (Z. Further a drawing die 6 is composed of segments and made expandible. This is effected by a conical insert 7". During the downward movement of the upper part an ejector g presses in its lower position upon the conical insert 7', whereby the segment jaws of the drawing die 6 are pressed apart.
The operation is as follows:
upper part of the sheet metal is first cut out and drawn in the usual manner. 'In its lowest position the ejector presses on theconical insert f, so that the segment jaws of the drawing die 6 expand and press the sidewall of the already finished drawn box over the ledge 71/ of the drawing die 5, thus producing the set off edge on the tin box, Fig. 2. Dur- I ing the upward movement of the upper part the box is held in the cutting die a by resilient balls 'imounted around same and is ejected in known manner in the extreme upper position by the ejecting'device 7c.
In this manner boxes of any shape and.
having a set off edge of any desired shape can be made by suitably shaping the draw-' of said plunger and means for expanding said sectional plunger whereby to expand a portion of the box. 7 I
2. A device as specified in claim 1 further. characterized by having incombination cooperating cutting rings, a blank holder ring adapted to move into and out of an annular channel surrounding said plunger, and a spring actuated ejector means moving in a central cavity of said die for automatically ejecting the work. I
In testimony whereof I afiix my si nature.
FRIEDRICH EIsENLoH During the downward movement of the
US429783A 1929-02-25 1930-02-19 Box stamping and drawing tool Expired - Lifetime US1857628A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE38834D DE522880C (en) 1929-02-25 1929-02-25 Stamping and drawing tool for the production of a hollow body from sheet metal, such as. B. a can body, with a bead for the lid

Publications (1)

Publication Number Publication Date
US1857628A true US1857628A (en) 1932-05-10

Family

ID=7078457

Family Applications (1)

Application Number Title Priority Date Filing Date
US429783A Expired - Lifetime US1857628A (en) 1929-02-25 1930-02-19 Box stamping and drawing tool

Country Status (5)

Country Link
US (1) US1857628A (en)
DE (1) DE522880C (en)
DK (1) DK44093C (en)
FR (1) FR690479A (en)
GB (1) GB335874A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461839A (en) * 1949-02-15 Device for eestoking to shape the
US3192761A (en) * 1961-07-28 1965-07-06 Raceways Inc Punch and die assembly
US3768295A (en) * 1972-02-08 1973-10-30 Reynolds Metals Co Forming apparatus and method
US4485661A (en) * 1981-09-16 1984-12-04 Karl Hehl Deep-drawing end edge-trimming die
US4489584A (en) * 1982-12-02 1984-12-25 Hartup Tool, Inc. Single stroke, draw and trim die assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113399561B (en) * 2021-06-15 2023-03-21 广州广重分离机械有限公司 Device for machining conical thin-walled part

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461839A (en) * 1949-02-15 Device for eestoking to shape the
US3192761A (en) * 1961-07-28 1965-07-06 Raceways Inc Punch and die assembly
US3768295A (en) * 1972-02-08 1973-10-30 Reynolds Metals Co Forming apparatus and method
US4485661A (en) * 1981-09-16 1984-12-04 Karl Hehl Deep-drawing end edge-trimming die
US4489584A (en) * 1982-12-02 1984-12-25 Hartup Tool, Inc. Single stroke, draw and trim die assembly

Also Published As

Publication number Publication date
GB335874A (en) 1930-10-02
FR690479A (en) 1930-09-20
DE522880C (en) 1931-04-16
DK44093C (en) 1931-05-04

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